ABC COMPUTER COMPANY, LTD.
==========================

   16 BIT MULTI-I/O

   +------------------------------------------------------------+
   |------------------------------------------------------------|
   | Data bus:     | 16-bit, ISA                                |
   |---------------+--------------------------------------------|
   | Size:         | Half-length, full-height card              |
   |---------------+--------------------------------------------|
   | Hard drive    | Two IDE (AT) Interface drives              |
   | supported:    |                                            |
   |---------------+--------------------------------------------|
   | Floppy drives | Four 360KB, 720KB, 1.2MB, or 1.44MB drives |
   | supported:    |                                            |
   +------------------------------------------------------------+

<gopher://bitreich.org/I/th99/c/A-B/20414-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   |                    Function                     | Location |
   |-------------------------------------------------+----------|
   | 34-pin control cable connector - floppy drive   |    J1    |
   |-------------------------------------------------+----------|
   | 34-pin control cable connector - floppy         |    J2    |
   | drive/tape drive                                |          |
   |-------------------------------------------------+----------|
   | 2-pin connector - Drive active LED              |    J3    |
   |-------------------------------------------------+----------|
   | 40-pin IDE(AT) Interface connector              |    J4    |
   |-------------------------------------------------+----------|
   | 10-pin serial port (COM1/3) - internal          |    J5    |
   |-------------------------------------------------+----------|
   | 10-pin serial port (COM2/4) - internal          |    J6    |
   |-------------------------------------------------+----------|
   | 15-pin game port - external                     |    J7    |
   |-------------------------------------------------+----------|
   | 25-pin parallel port (LPT1/2) - external        |    J8    |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |               Function                | Location | Setting |
   |---------------------------------------+----------+---------|
   |>> | Disk change signal is set to      |   JP1    | closed  |
   |   | normal operation                  |          |         |
   |---+-----------------------------------+----------+---------|
   |   | Disk change signal is set to      |   JP1    |  open   |
   |   | diagnostic mode                   |          |         |
   |---+-----------------------------------+----------+---------|
   |>> | I/O Channel Ready signal disabled |   JP2    | closed  |
   |---+-----------------------------------+----------+---------|
   |   | I/O Channel Ready signal enabled  |   JP2    |  open   |
   |---+-----------------------------------+----------+---------|
   |>> | Game Port (J7) enabled            |   JP10   | closed  |
   |---+-----------------------------------+----------+---------|
   |   | Game Port (J7) disabled           |   JP10   |  open   |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |              PARALLEL PORT (J8) CONFIGURATION              |
   |------------------------------------------------------------|
   |      LPT/IRQ      |   JP3    |   JP6   |        JP9        |
   |-------------------+----------+---------+-------------------|
   |>> |   LPT1/IRQ7   |    on    |   off   | pins 2 & 3 closed |
   |---+---------------+----------+---------+-------------------|
   |   |   LPT2/IRQ5   |   off    |   on    | pins 1 & 2 closed |
   |---+---------------+----------+---------+-------------------|
   |   |   Disabled    |   off    |   off   |        n/a        |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |              SERIAL PORT 2 (J6) CONFIGURATION              |
   |------------------------------------------------------------|
   |        COM/IRQ        |      JP4      |        JP7         |
   |-----------------------+---------------+--------------------|
   |>> |     COM2/IRQ3     |    closed     | pins 1 & 2 closed  |
   |---+-------------------+---------------+--------------------|
   |   |     COM4/IRQ5     |     open      | pins 2 & 3 closed  |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |              SERIAL PORT 1 (J5) CONFIGURATION              |
   |------------------------------------------------------------|
   |        COM/IRQ        |      JP5      |        JP8         |
   |-----------------------+---------------+--------------------|
   |>> |     COM1/IRQ4     |    closed     | pins 1 & 2 closed  |
   |---+-------------------+---------------+--------------------|
   |   |     COM3/IRQ9     |     open      | pins 2 & 3 closed  |
   +------------------------------------------------------------+